Combined lighting and observation port



I July 26, 1938. G. P. HAYNEs 2,125,021

coNINND LIGHTING AND osNRvATIQN Pom" Filed Neb. 1, 1937 l VENTOR 2 BY. y

ATTORNEY Patented July 26, 1938 UNITED STATES COMBINED LIGHTING AND OBSERVATION ORT George P. Haynes, East Rockaway, N. Y., assignor toY Todd Combustion Equipment, Inc., New York, N. Y., a corporation of New York Application February f1, 1937, Serial No. 123,338

` 2 Claims. (C1. 126-200) `This invention relates to ignition and observation ports for use in bulkheads such as are disclosed in my co-pending patent application Serial No. 88,736, filed July 3, 1936, wherein the fire room of a ship employing liquid fuel burning equipment is divided by a bulkhead into a boiler compartment and an operators compartment.

It is necessary that these bulkhead ports be tightly closed, so that in event either compartment is pierced water cannot escape into the opposite compartment, and it is also necessary to prevent gas escaping into the operators' compartment from the boiler compartment.

Therefore, I have provided in the bulkhead l5 novel structure for the igniting port so that it may be sealed gas tight when closed, and I have also provided an observation port which is always tightly sealed.

On the bulkhead the igniting and observation ports are arranged in pairs, each pair so disposed that it may serve for use with adjacent burners, so that for example the igniting of two burners may be performed by the use of one pair of these ports.

In carrying out my invention, I provide a clearance through the bulkhead of suicient area to encompass a pair of ignition and observation openings and secure to said bulkhead an escutcheon that covers said clearance and itself has openings that constitute the igniting and observation ports. Said escutcheon, at the igniting port, is

provided With valve seats at both sides, and a common bolt, which is extended through the escutcheon, land is packed against leakage, carries gate valves that are tensionally localized against said seats respectively. A handle carried by the forward valve serves to operate both valves.

'I'he companion observation port formed in the escutcheon comprises a packed seat for a thick piece of glass at one side thereof and a threaded ring that is screwed into tight, packed relation at the other side.

Other features and advantages of my invention will hereinafter appear.

In the drawing:-

Figure 1 is a face view of the bulkhead employed to divide the fire room'operators compartment from the boiler compartment, there being here indicated in dotted lines a bank of seven furnaces, each provided with oil burning equipment, and a group of five escutcheons, each including a pair of ignition and observation ports, so arranged that each pair may serve in igniting two adjacent burners.

Fig. 2 is an enlarged detail of an escutcheon having a pair of ignition and observation ports.

Fig. 3 is a section on the line 3-3 of Fig. 2, and

Fig. 4 is a section on the line 4-4 of Fig. 2.

In Fig. 1 there is shown at I a fire room bulkhead and upon said bulkhead are indicated by dotted-circles 2 a bank of seven furnaces which, of course, are spaced rearwardly from said bulkhead. Extending through the bulkhead are the usual oil burning devices whose forward portions 10 are indicated at 3, and at II I have indicated one of the escutcheons, mounted on the bulkhead, each escutcheon having a pair of igniting and observation ports, as more particularly illustrated in Figs. 2, 3 and 4. 15

These escutcheons appear in the form of oval plates having a series of lugs 6 with bolts 1 through said lugs that secure the escutcheon to the bulkhead, covering a clearance aperture 8 therein. 20

The escutcheons each have a wall with a forwardly raised portion 9 defining an opening I0 that serves as an igniting port, said wall being extended at II where it is pierced, at I2, for the reception of a bolt I3. The forward and rear- 25 Ward surfaces of wall 9 are finished with smooth valve seats I4. Gate or disk valves I5, I6, carried by bolt I3 are operable unitedly thereby. A handle II, engaging valve I5 is used to swing these valves for opening and closing port II). 30

The bolt I3 has its end portion squared as at I8, to engage complementary squared openings in the gates I5 and I6, whereby said bolt is caused to rotate in the operation of the gates. A reduced portion I9 of bolt I3, at each end thereof, 35 is threaded to receive nuts 20, and a spring 2l for each gate is tted over said threaded portion, being lodged on the bolt shoulder and clamped thereagainst by the nut over a Washer 22- The springs 2l exert pressure upon the gate valves to 40 localize them in their seated position. In order that there may be no leakage through the wall extension I I, past the bolt I3, said Wall extension is provided with a threaded recess around the bolt as at 23 and packing material 24 placed 45 therein, said packing being compressed and retained in position to comprise a stuiing box, by means of a threaded ferrule 25 that is screwed into said recess.

In Fig. 4 I have shown the observation opening 50 26 formed in the escutcheon, the escutcheon wall around this opening being shouldered as at 21 to seat a packing ring 28, and a thick disk 29 of glass is placed against said packing ring, being secured by a threaded ring 30 that is screwed into 55 the escutcheon wall, at the opposite side of disk 29, over a packing ring 3|.

It will be noted that packing material 32 is provided between the escutcheon and the bulkhead to prevent leakage therebetween.

Also it is to be understood that pressure from opposite sides of the bulkhead is depended on to hold the respective gate valves tightly to their seats.

Variations within the spirit and scope of my invention are equally comprehended by the foregoing disclosure.

1. An observation port adapted to be attached to a wall having an aperture, and comprising a plate provided with an opening smaller than said aperture and with a smooth plane valve seat surface inwardly of the wall of said aperture on one side of the plate, said plate having on its other side a forwardly raised portion surrounding said .opening to present a valve seat, a rotatable shaft mounted in said plate, a pair of gate valves borne by the opposite ends of said shaft, said Valves engaging respectively with said valve seats, one

of said valves being operable within the confines of said aperture, tension means carried by the opposite ends of said shaft, operable therewith, and contacting said Valves to press the same on their respective seats, and means engaging one of said valves for their joint operation.

2. A combined lighting and observation port structure adapted to be attached to a wall having an aperture, and comprising a plate provided with a pair of openings leading into said aperture, a ange surrounding said openings, a transparent window closing one of said openings, a

rotatable shaftl borne by said plate, a pair of gate Valves aixed to the opposite ends of said shaft and normally closing the front and rear ends of one of said openings, tension means carried by the opposite ends of said shaft to hold said valves in contact with said plate, and means to `operate said Valves in unison, the arrangement being such that said valves are operated to uncover said lighting port and to cover the 0bservation port.

GEORGE P. HAYNES. 

